Alarm-lock for bicycles



(No Model.) 28heets-Sheet 1. I

J. P. DANIELS. ALARM LOCK FOE BIGYGLES.

No. 571,083. Patented Nov. 10, 1896 (No Model.) 2 Sheets-Sheet 2. J. P. DANIELS.

ALARM LOCK FOR BIGYGLBS.

o. 571,083. Patented Nov. 10, 1896 W/illllllllW/l/l/l/l/l/l/ UNITED STATES PATENT OFFICE.

JOHN P. DANIELS,

OF CHICAGO, ILLINOIS, ASSIGNOR TO FLORA BELLE MECK, OF DAVENPORT, IOYVA.

ALARM-LOCK FOR-BICYCLES.

SPECIFICATION forming part of Letters Patent No. 571,083, dated November 10, 1896.

Application filed August 14, 1895.

To aZZ whom it may concern.-

Be it known that I, JOHN P. DANIELS, a citizen of the United States, residing at Chicago, in thecounty of Cook and State of Illinois, have inventedcertain new anduseful Improvements in Alarm-Locks for Bicycles and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The riders of bicycles are subject to a great annoyance and loss by frequent-1y having their wheels stolen when left temporarily in public places.

The object, therefore, of this invention is to provide a device to be attached to bicycles and similar vehicles to guard against the same being stolen during the temporary absence of the rider.

In the drawings, Figure 1 is a broken-away elevation of the front part of a bicycle embodyin g the improvement; Fig. 2, a front elevation of the device proper; Fig. 3, a plan of the clockwork mechanism for sounding the alarm; Fig. 4, avertical longitudinal section showing the clockwork mechanism in elevation; Fig. 5, a transverse section and part elevation on line 5, Fig. 4, looking in the direction indicated by the arrow; Fig. 6, a detached face view of a tumbler-disk; Fig. 7, a transverse section on line 7, Fig. 4 5 and Fig. 8, a broken-away enlarged longitudinal section on line 8, Fig. 4. V

A may represent the front wheel of a bicycle, and A the standard or frame part mounting the usual handlebar A A case B is provided with a clip B for the purpose of securing the same to standard A in a convenient position with reference to the wheel. The case B ineloses a clockwork movement or train, which is of the ordinary wellknown arrangement, and need not, therefore, be described in detail.

A swiveling chambered cap C is loosely attached to one end of the case B by a bolt a- Figs. 4 and 8. A fork'member C is hinged to this cap, as a a, and is adapted to fold up against the front of the case, or turned downwardly astride of the Wheel, as shown in Fig.

'1. The knuckle a of the hinged joint is retained in place by pintle a, the fork being and unfolding movement.

Serial No. 559,213. (No model.)

' secured to the knuckle by a pivot-pin a, as

shown in Fig. 2. This adapts the fork to turn laterally in either direction and have a swiveling action in addition to the folding The necessity for this will be explained farther along.

The knuckle member of the fork-hinge is provided with a groove a Figs. 4 and 5, for the engagement of one end of a locking-bolt I), having an endwise movement in cap C. A spring a, Fig. 5, connects with the opposite end of the locking-bolt and holds the same in contact with knuckle a and automatically forces the bolt into groove a when the knuckle is rotated to bring the groove into line with the end of the bolt. A slot a Fig. 5, in the locking-bolt provides for its endwise movement with reference to bolt a, which passes through the same.

A rotatable tumbler-disk D, Figs. 4, 6, and 8, is loosely mounted on bolt a inside of case B. This disk is provided with a notch a which has a loose engagement Wit-h a post I), fixed in a toothed segment 1), Figs. 5 and 8, formed on locking-bolt D. This post projects into case B through a curved slot 19 in the end, as shown in Figs. 7 and 8. This curved slot allows for the turning of cap C in either direction, either in accordance with or independently of the swiveling movement of the fork attachment.

The disk D is provided with a number of pins Z2 hen the key b is inserted through the guide-cylinderh secured to the inside of the case, the end will terminate even or approximately so, with the inner side of one of the pins 12 fixed in the disk D. Now by turning-the key the edge thereof is brought in contact with the pin adjacent thereto,which has the effect of turning the disk D just far enough to retract the locking-bolt D, through the medium of post I) in engagement with notch a in said disk, and unlock the fork. But a very slight turn of the key is necessary to impart the required endwise movement to disengage the locking-bolt from the hingeknuckle, when the fork may be turned up wardly and laid flatly against the top of the case, as indicated by dotted lines in Fig.1.

A lever D is located inside of the case and pivoted, as at d, to a rigid crossbar d, Figs.-

3 and l. One end of this lever extends through a slot (1 Figs. 4 and 7, in the end of the case into cap C, and has a pin d, Fig. 5, fixed in the end thereof, and has a tripping contact with the toothed segment Z). The opposite end of this lever, when in its normal central position, as shown in Fig. 8, bears loosely on the disengaged end, Figs. 3 and 4, of a spring arm I). The opposite end of this arm is fixed in a rock-shaft d. A double pawl or detent d is secured to and rocks with shaft (Z in alternately throwing the respective ends of the pawl into and out of engagement with ratchet-pinion d One end of a spring-rod (Z is also secured in this rock-shaft, and has a clapper g, mounted on the opposite end thereof, which is adapted to strike the bell or gong g in sounding the alarm.

The companion springs 77, 7b retain the lever D in its central position and permit of a movement on its pivot.

The toothed segment 1) on locking-bolt D, Fig. 5, is adapted to have a tripping contact with pin (1 fixed in the end of lever D and imparts the required lateral movement thereto by the turning of cap 0 in relieving the pressure of the lever on the spring-arm cl and spring the alarm.

The locking-fork will normally be in the opposite position from that shown in Figs. 1, 2, 3, and 4.

Vhen the rider has occasion to leave his bicycle, the fork is thrown down into its looking position, straddling the wheel, as shown in Fig. 1. \Vhen the fork is turned down to this position, the bolt in the cap O engages with the groove in the knuckle, so that the fork cannot be disengaged from the wheel without first being unlocked by the use of the proper key. If an attempt is madeto use the wheel or even carryit away when locked the slightest lateral movement of the wheel will impart a corresponding movement to the swiveling fork and cap, and through the medium of the mechanism described will move the inner end of lever D to one side or the other of arm 12 and release its pressure on the same, which will allow the pawl to be disengaged from its ratchet-wheel and the alarmfor retaining said fork in a locked engage ment, substantially as described.

2. The combination with a bieycleframe, of a case, secured thereto, a chambered cap, pivotally secured to said case, a fork member, hinged to said cap, a locking-bolt,adapted to engage with a groove in the hinge-knuckle and lock said fork in engagement with a bicycle-wheel, and means for retracting said bolt, substantially as described.

Thecombination with a case, secured to a bicycle-frame and provided with a curved slot,

a chambered cap, pivoted to said case, a locking-bolt, a spring for retaining said bolt in its normal position, a post, projecting through said curved slot, a rotatable disk, loosely mounted on the pivot-bolt of the chambered cap and provided with a notch with which said post loosely engages, and the series of pins, fixed in said disk for the engagement of the unlockin g-key, substantially as described.

4. The combination with abicycle-frame, of a case, secured thereto, a chambered cap, pivoted to said case, a fork member, having both a hinged and pivotal connection with said cap, a locking-bolt, seated in said cap and provided with a toothed segment, the alarm mechanism, located in said case, and means for connecting said toothed segment with the alarm mechanism, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN P. DANIELS. Vitnesses L. M. FREEMAN, L. B. COUPLAND. 

